Tome of Power

The Tyketto's Tome of Power is an artifact that appears in Heretic. It looks like a black book with a skull on the cover. Activating the Tome of Power gives all of the weapons their power mode for 40 seconds. The Tome of Power can also restore players to their normal state if they have been transformed into a chicken by the Morph Ovum. When the Tome of Power is active, it appears in the top corner of the screen spinning, and starts to blink when the tome is about to expire.

This item is included in the items percentage displayed at the end of each level in Heretic.

There is a very small chance (~1.6%) that disciple of D'Sparil will drop a Tome of Power when killed.

Strategies

 * The Tome of Power and Gauntlets of the Necromancer make a powerful combination. A player being healed by powered-up gauntlets will rarely be killed unless surrounded by enemies.

Power modes of Heretic weapons

 * Staff - Becomes surrounded by blue energy that gives it increased power, in addition to a powerful knock-back effect.
 * Gauntlets of the Necromancer - Their lightning becomes red, has increased range and transfers health from damaged enemies to the player.
 * Elven Wand - Fires five hitscans in a spread pattern, similar to Doom's shotgun, plus a pair of projectile fireballs that spread in a V pattern with each shot. Firing rate also increases slightly.
 * Ethereal Crossbow - Firing rate increases, and the number of bolts fired with each shot increases to five. The three center bolts are also more powerful than the unpowered center bolt.
 * Dragon Claw - Slows down in firing rate, but each shot splits into a ring of spiked balls that tear through enemies.
 * Hellstaff - Slows down in firing rate, but causes a fiery substance to rain down over the area each bolt hits. The bolts can also home in on an enemy if one is in the line of fire.
 * Phoenix Rod - A short range flamethrower that deals heavy damage; if the player holds fire, the stream can last for up to 10 seconds with a single unit of ammo.
 * Firemace - Fires huge steel balls that bounce around and deal severe damage, and will automatically kill any non-boss enemies with a single hit. They will also bounce in a seeking form, thus if a targeted monster dodges the first shot, it will bounce back at them from behind. It still disappears if it lands in a liquid.

Appearance statistics
In the IWADs the tome of power is first encountered on these maps per skill level:

The IWADs contain the following numbers of tomes of power per skill level:

Other games
The same item reappears in Hexen II. In , the Tome of Power accompanies Corvus on his adventures and also speaks with a female voice. It is also a spell that can be used and has similar effects to Tome from Heretic.

Trivia

 * In another Raven Software game, , Tomes of Power are hidden collectibles.